User Manual

GMC-I Messtechnik GmbH 33

V/Hz, Ω, Temperature, and A/Hz Measurements

5.5 Diode Testing with Constant Current of 1 mA

Ð Disconnect supply power from the electrical circuit of the

device to be measured, and discharge all high-voltage

capacitors.

Ð Make sure that the device under test is voltage-free.

Interference voltages distort measurement results!

Refer to section 5.2.1 regarding testing for the absence of volt-

age with the help of the direct voltage measurement.

Ð Set the rotary switch to .

Ð Connect the device under test as shown.

Attention!

Observe open-circuit voltage of 7 V during diode testing.

Circuits must be laid out accordingly.

Forward Direction and Short-Circuit

The instrument displays forward voltage in volts (display:

4 places). As long as voltage drop does not exceed the maximum

display value of 6 V, several series connected components or

reference diodes can be tested with a small reference voltage and

Z-diodes.

Reverse Direction and Interruption

The measuring instrument indicates overload 0L.

Note



Resistors and semiconductor paths connected in parallel to

the diode distort measurement results!

–+ +

Forward Direction Reverse Direction

0V !

0.654

0.L

to 6 V

Measuring range:

–

1.8569